Traditionally in marketing and communications emphasis has been on evergreen content - something that will stay visible and relevant for years. Evergreen content is still important and forms the backbone of many websites, including blog posts, white papers or case studies, and complementary media like videos or podcasts. However, over the past few years there have been more and more opportunities to experiment with ephemeral content, which is any content that disappears quickly - usually after 24 hours - and can't be found again.
Ephemeral content is mostly based on video and social media platforms. Snapchat introduced the world to the concept, but virtually all major social media platforms now have ways of posting something that is designed to be seen for only a short time.
How Is It Used?
Celebrities frequently use this kind of content to showcase personal videos, and in general ephemeral content is very popular as a way to share something personal people don't necessarily want on the internet forever. In some ways, it could be considered the evolution of "felt cute, might delete later" culture, but with a mechanic in place to make it easy and acceptable.